[Qemu-devel] [PATCH v3 2/4] sclp-s390: Add device to manage s390 memory hotplug

[Matthew Rosato <mjrosato@linux.vnet.ibm.com>]

Add sclpMemoryHotplugDev to contain associated data structures, etc.

Signed-off-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com>
---
 hw/s390x/sclp.c         |   32 ++++++++++++++++++++++++++++++++
 include/hw/s390x/sclp.h |   19 +++++++++++++++++++
 2 files changed, 51 insertions(+)

diff --git a/hw/s390x/sclp.c b/hw/s390x/sclp.c
index d8ddf35..338dbdf 100644
--- a/hw/s390x/sclp.c
+++ b/hw/s390x/sclp.c
@@ -183,3 +183,35 @@ void s390_sclp_init(void)
                               OBJECT(dev), NULL);
     qdev_init_nofail(dev);
 }
+
+sclpMemoryHotplugDev *get_sclp_memory_hotplug_dev(void)
+{
+    DeviceState *dev;
+    ObjectProperty *op = object_property_find(qdev_get_machine(),
+                                              TYPE_SCLP_MEMORY_HOTPLUG_DEV,
+                                              NULL);
+    if (!op) {
+        dev = qdev_create(NULL, TYPE_SCLP_MEMORY_HOTPLUG_DEV);
+        object_property_add_child(qdev_get_machine(),
+                                  TYPE_SCLP_MEMORY_HOTPLUG_DEV,
+                                  OBJECT(dev), NULL);
+        qdev_init_nofail(dev);
+        op = object_property_find(qdev_get_machine(),
+                                  TYPE_SCLP_MEMORY_HOTPLUG_DEV,
+                                  NULL);
+    }
+
+    return op->opaque;
+}
+
+static TypeInfo sclp_memory_hotplug_dev_info = {
+    .name = TYPE_SCLP_MEMORY_HOTPLUG_DEV,
+    .parent = TYPE_DEVICE,
+    .instance_size = sizeof(sclpMemoryHotplugDev),
+};
+
+static void register_types(void)
+{
+    type_register_static(&sclp_memory_hotplug_dev_info);
+}
+type_init(register_types);
diff --git a/include/hw/s390x/sclp.h b/include/hw/s390x/sclp.h
index 7ef1622..5f463bd 100644
--- a/include/hw/s390x/sclp.h
+++ b/include/hw/s390x/sclp.h
@@ -37,6 +37,7 @@
 #define SCLP_STARTING_SUBINCREMENT_ID           0x10001
 #define SCLP_INCREMENT_UNIT                     0x10000
 #define MAX_AVAIL_SLOTS                         32
+#define MAX_STORAGE_INCREMENTS                  1020
 
 /* CPU hotplug SCLP codes */
 #define SCLP_HAS_CPU_INFO                       0x0C00000000000000ULL
@@ -156,6 +157,23 @@ typedef struct SCCB {
     char data[SCCB_DATA_LEN];
  } QEMU_PACKED SCCB;
 
+typedef struct sclpMemoryHotplugDev sclpMemoryHotplugDev;
+
+#define TYPE_SCLP_MEMORY_HOTPLUG_DEV "sclp-memory-hotplug-dev"
+#define SCLP_MEMORY_HOTPLUG_DEV(obj) \
+  OBJECT_CHECK(sclpMemoryHotplugDev, (obj), TYPE_SCLP_MEMORY_HOTPLUG_DEV)
+
+struct sclpMemoryHotplugDev {
+    DeviceState parent;
+    ram_addr_t standby_mem_size;
+    ram_addr_t padded_ram_size;
+    ram_addr_t pad_size;
+    ram_addr_t standby_subregion_size;
+    ram_addr_t rzm;
+    int increment_size;
+    char *standby_state_map;
+};
+
 static inline int sccb_data_len(SCCB *sccb)
 {
     return be16_to_cpu(sccb->h.length) - sizeof(sccb->h);
@@ -163,6 +181,7 @@ static inline int sccb_data_len(SCCB *sccb)
 
 
 void s390_sclp_init(void);
+sclpMemoryHotplugDev *get_sclp_memory_hotplug_dev(void);
 void sclp_service_interrupt(uint32_t sccb);
 void raise_irq_cpu_hotplug(void);
 
-- 
1.7.9.5